Ceramic Tube
Specifications
Ceramic Tube1.High intension
2.Good insulating and strength
3.Un-knit and velvet surface
4.Good airproof capability
Ceramic Tube
1. High intension
2. Good insulating and strength
3. Un-knit and velvet surface
4. Good airproof capability
5. High temperature furnace Al2O3 alumina ceramic Tube
6. Material: Alumina ceramic
Mainly Usage:
1. Heat treatment furnace and toughened furnace
2. Inner liner tube and heating tube in electric furnace
Features:
1. Great mechanical strength
2. High softening temperature
3. Good resistance to thermal impact
4. Small thermal expansion coefficient
5. Good chill and abrupt heat properties
6. Resistance to acid and alkali corrosion
Chemical competent |
Al2O3 |
≥99.5% |
SiO2 |
<0.2% |
|
Fe2O3 |
<0.1% |
|
Alkaline matter |
<0.1% |
|
Density |
3.9 g/cm3 |
|
Hardness |
9 M |
|
Water absorption |
<0.1% |
|
Ruptures trength |
>2000kg/cm2 |
|
Gas tightness |
Kept for ten minutes at negative pressure of 1.3Kpa. |
|
Thermal tolerance |
Insert the pipe into the furnace at a depth of 20mm. |
|
Alkali tolerance |
In the Na2CO3 solution of 2N concentration, boil for |
|
Volume resistance |
>9*10(5) Ω·cm/1600ºC |
|
Breakdown voltage |
20kv/cm |
|
Expansion coefficient |
8*10(-8) |
|
Temperature for use |
Long-term: 1600ºC Short-term: 1800ºC |
|
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